SGM-SF_2017with 12/20 Revisions

Documentation—Chemical Vapor Intrusion 59 ANSI/AARST SGM-SF 2017 (with 1220 revisions) Soil Gas Mitigation Standards for Existing Homes Table 13.7 Operation, Maintenance and Monitoring (OM&M) Manual Requirements Controls and SystemMonitors Documentation Maintenance Inspections of Controls and Monitors Frequency of Inspection Document Startup Details: A description shall be provided for the fan monitors, control settings and other operating parameters that existed at the time successful mitigation was initially achieved. Note—The description should include explicit detail for comparison during inspections and repair, including: ü descriptions of equipment labeling and annotations for fan monitors, control settings and other operating parameters; ü exact locations of fan monitors, electronic telemetry/monitoring equipment, permanent test ports, electrical disconnects and other components; ü instructions for equipment sufficient to interpret labels, annotations and the designed operating parameters for the equipment. When applicable, include manufacturer instructions; ü a list of appropriate actions for the client(s) to take if fan monitor devices or other inspection procedures indicate that the system(s) are not operating as designed. ü If non- ASD pressure or dilution methods are employed (see Section 12 ), include documented measurements for balance of airflow in and airflow out of air handler system(s). The OM&M plan provided shall observe that routine inspections of controls and monitors are a minimum obligation and required component of a long-term risk management plan. The following inspections shall be written into the OM&M plan as required actions: a) inspection of fan monitors, control settings and other operating parameters to ensure that the system(s) are operating as designed; b) investigation and correction of any conditions that are found to indicate component failure or inconsistencies in designed operating parameters for the system(s); c) maintenance of records assimilated into the overall building OM&M documentation; and d) The plan shall stipulate that a qualified professional should perform these inspections. The plan shall stipulate recommendations and any requirements for the frequency of inspections of controls and monitors (as deemed by the contractor as appropriate or as determined in coordination with an overseeing professional ). Note 1—Systems with controls for seasonal adjustment should be inspected more frequently. Note 2—The plan should also recommend inspections of mechanical equipment in addition to controls and monitors subsequent to a motor replacement or any catastrophic event that could damage system components. Mechanical Equipment Documentation Mechanical Equipment Inspections Frequency of Inspection Provide Equipment Details and Instructions: ü Include manufacturer instructions and specific design instructions, as appropriate; ü Documentation should include exact locations of fans, electrical disconnects and other components; and ü Include a list of appropriate actions for the client(s ) to take if the fan monitor warning devices indicate system degradation or failure. A list of potential repair items for ASD systems should include: i. fan monitor repair or replacement (e.g., reconnect or replace oil in U tube); ii. electrical repair; iii. fan or boot replacement; and iv. sealing of foundation openings to soil or vent piping connections. The OM&M plan provided shall observe that mechanical inspections should include: a) performance indicators, labels and fan operation; b) all seals, straps, fasteners, fan boots and pipe condition; and c) the electrical system (including switch operation) and other related building systems (e.g., sump pumps and combustion appliances). If non- ASD methods are employed, the plan shall observe additional mechanical inspections stipulated in Section 12 . The plan shall stipulate that a detailed inspection of mechanical equipment be conducted at each monitoring event in accordance with this Table 13.7 or as determined in coordination with an overseeing professional . Note—It is customary that recommendations include inspection of mechanical equipment by a qualified professional no less than every 2 years.